The Food Challenge: Controlling Allergies With Tiny Bites

Five-year-old Blake Ringstrom's life has been an extraordinary and excruciating journey through a medical minefield. Blake is allergic to so many foods that, until recently, he was fed only through a tube implanted in his stomach. Now, after undergoing an emerging medical technique, Blake can enjoy a normal, sit-down meal with his family.

Courtesy the Ringstrom family

Five-year-old Blake Ringstrom's life has been an extraordinary and excruciating journey through a medical minefield.

Blake is allergic to so many foods that, until recently, he was fed only through a tube implanted in his stomach. Now, after undergoing an emerging medical technique, Blake can enjoy a normal, sit-down meal with his family.

For his mother, Becky Ringstrom, seeing her son eat normal food is "pretty overwhelming. We still like to sit here and watch him eat."

Thanks to this method, Blake was recently able to take his very first bites of real food in nearly two years. Using the Food Challenge, children who test positive to allergens, using blood and skin tests, are fed -- in a highly controlled setting -- incremental amounts of the very foods to which they appear to be allergic.

The standard methods of blood and skin testing revealed that Blake's allergic reactions, first diagnosed when he was 6 months old, are dangerously off the charts. His intake of solid foods was restricted to pork and white navy beans.

"We felt like we were grasping at straws," said Blake's mother. "He wasn't getting better, he wasn't growing, he was still kind of sick all the time. ... The itching was constant. We had to put socks over his hands so he wouldn't make himself bleed."

The Ringstroms, who live in a small town in Minnesota, took Blake to the Mayo Clinic, where doctors decided a draconian move was the safest course: Take him off solid foods altogether. He was fed by a tube for two years.

"We just changed our mindset," Becky Ringstrom said. "We felt like this is helping him. ... This is his food; some people eat with a fork, but for him ... he eats with his tube."

'He Didn't Know How to Eat'

Desperate for a more normal life, Blake's parents found their way to Denver's National Jewish Hospital, known for its pioneering work on food allergies. There, Blake's allergies were rediagnosed by a series of food challenges, meaning he was fed small amounts of the foods he and his family believed would make him sick.

"We decided that if we are here, we need to try this," Becky Ringstrom said. "If he really is determined not to eat forever, we just wanted to know for sure."

"He didn't know how to eat again," said Dr. Jonathan Malka, a pediatrician at the hospital. "So I had to start over from the beginning; how to feed a child who has not eaten for the last two years."

The very first food challenge was tiny portions of pureed sweet potatoes.